1 files changed, 37 insertions, 0 deletions
diff --git a/browser/modules/test/browser_BrowserUITelemetry_defaults.js b/browser/modules/test/browser_BrowserUITelemetry_defaults.js
new file mode 100644
index 000000000..ced1bbce0
--- /dev/null
+++ b/browser/modules/test/browser_BrowserUITelemetry_defaults.js
@@ -0,0 +1,37 @@
+// The purpose of this test is to ensure that by default, BrowserUITelemetry
+// isn't reporting any UI customizations. This is primarily so changes to
+// customizableUI (eg, new buttons, button location changes) also have a
+// corresponding BrowserUITelemetry change.
+
+function test() {
+  let s = {};
+  Cu.import("resource:///modules/CustomizableUI.jsm", s);
+  Cu.import("resource:///modules/BrowserUITelemetry.jsm", s);
+
+  let { CustomizableUI, BrowserUITelemetry } = s;
+
+  // Bug 1278176 - DevEdition never has the UI in a default state by default.
+  if (!AppConstants.MOZ_DEV_EDITION) {
+    Assert.ok(CustomizableUI.inDefaultState,
+              "No other test should have left CUI in a dirty state.");
+  }
+
+  let result = BrowserUITelemetry._getWindowMeasurements(window, 0);
+
+  // Bug 1278176 - DevEdition always reports the developer-button is moved.
+  if (!AppConstants.MOZ_DEV_EDITION) {
+    Assert.deepEqual(result.defaultMoved, []);
+  }
+  Assert.deepEqual(result.nondefaultAdded, []);
+  // This one is a bit weird - the "social-share-button" is dynamically added
+  // to the toolbar as the feature is first used - but it's listed as being in
+  // the toolbar by default so it doesn't end up in nondefaultAdded once it
+  // is created. The end result is that it ends up in defaultRemoved before
+  // the feature has been activated.
+  // Bug 1273358 exists to fix this.
+  Assert.deepEqual(result.defaultRemoved, ["social-share-button"]);
+
+  // And mochi insists there's only a single window with a single tab when
+  // starting a test, so check that for good measure.
+  Assert.deepEqual(result.visibleTabs, [1]);
+}